FRESNO (KMJ) — More than 13 million Californians are affected by the anthem data breach.
The nation's second largest insurer was hit by a cyber-attack earlier this month – which leaked social security numbers – dates of birth – and other sensitive information.
The firm are continuing to investigate the depth of the breach.
They're offering free identity theft protection and credit monitoring – details of how to sign up can be found here.
In California – Anthem leads the state's Obamacare insurance exchange – and is the state's largest for-profit health insurer.